Hydraulic jack for stump-pullers.



C. J. TRINKAUS.

HYDRULIG JACK FOR STUMP PULLBRS.

APPLICATION FILED MAY 1o, 1912.

j 5,6 A' l? Patented .July 7,1914/ 3 SHEETS-SHEET 1.

G. J. TRINKAUS.

HYDRAULIG JACK FOR STUMP PULLERS.

APPLIoATloNILBD MAY 1o, 1912.

Patented July 7, 1914.

3 SHEETS-SHEET 2.

o. J. TRINKAUS.

HYDRAULIC JACK FOR STUMP PULLEBS. APPLICATION FILED MAY 10,1912.

1,102,825, Patented Jul;r 7, 1914,

3 SEEETS-SHBET 3.

To all whom it may concern l v'Uui'rnn STATES .PATENT onene CHARLES J. TRINKAUS, 0F CHICAGO, ILLINOIS.

HYDRAULIC .TACK 'FOR STUMP-PULLERS,

i Specification ofiLetters Patent.' gully 3., llgll.,

Application med nay 101912. seal No. V696,412. i

Beit known that I, CHARLES el. Tnrnnans, a citizen of the United States, residing at Chicago, in the county of Cools. and Statev of Illinois, have invented certain new and useful Improvements in Hydraulic Jacksv :tor StumpfPullers, of which the following is a specification, reference being had therein to the accompanying drawing.

-Thisinvention relates to stump pullers .of that type in which theoperating power 1s manual.

. The invention has for its principal object to improve and simplify t e-construction and operati-on of manually operated stump .pullers so as lto be thoroughly reliable, etlicient and successful in`use,vand so desi ned that a man alone can operate-the mac ine- 'to extracty large trunks fromtheearth.v :25A11other'ob3ect of the, invention is-the provision of a hydraulic jack or motor so arranged and combined with-winding drums l that a powerful dra-ft can be'produced. on

the cable or ,cables that are adapted to wind i 0n the drums to extract the stumps, there being a ratchet and pawl-device between the jack and' drums wh reby the lattercan be. turned step by step by the reciprocation. o f the piston of the hydraulic jack or motor. l

In carrying out the inventiom'thewinding drums Iare mounted on the bodyof a l to the stumps to be pulled, one cable having vehicle andtwo cables lead from the drum its' ends so arranged as to wind' underthe drums, while the other cable winds over the l `the ratchet wheel so asto turn the latter step by step as the lever is oscillated. This lever which hangs from the drum shaft has its lower end connected with a piston .rod

of a motor or hydraulic jack that is mounted -on the vehicle in such position that as the piston reciprocates, the drums will vbe turned. Hydraulic pressure. is applied to the piston of the motor by means of a pump l which 4is, mounted at thesdeof the vehicle body and? operated vby the attendant, the pump being equipped with a reservoir that contains'oll, alcohol, Water or any4 other hydraulic medium,4 which is vused-over and over again in the `operation of the motor. c.

By operating the pump, the motor is moved on. the power stroke to .turn the drums, and `on the' -reverse stroke, the hydraulic medium 1s forced out of the motor and back to the reservoir-.of the pump. ,In other words, the

pump and motor-form what is'ordinarily termed a hydraulic jack.4 The return stroke ofthe motor 4is effected. by means of a lever whichjs .fulcrumed on the .vehicle body at site. sjidewso .as to be convenient-ly within reachof the attendant whileoperating the pump. v ',Iflief attendantfirst operates the .one side and extends therefrom to the oppoy.

its-.power stroke and vthen the valve-con 1 trolling device of ,thepump ismanipulated so that -thereturn lever can now be operated to force thefhydraulicfmcdium back to. the reservoir, By ,repeating 'thesel operations, .the 'cables are stumps are pulled.l ,c IFora more complete'understandinget the details of the invention, Iits Vobjects and advantages, reference is to loe-had to ,the

wound on 'the .drums as the accompanying drawings, ,which illustrate i v'one embodiment ofthe-invention', and in which,l t 1.,.,

Figure l lis a plan view4 ofA thel ma chine. ,Figa 2 is ,a sideview ofthe machine. Fig@ isa front viewcf the stump pullin machine. Fig. 4 .is a detail view of the paw and ratchet operating means for-the' drums. ASimilar reference. characters are employed to. designate corresponding parts thro hout the views. a

*they body of the vehicle on which the stump pulling apparatus is mounted, the said body,

while it may be of any approved construction, being in the present instance, of rectanular form and made of side I-beams l and rontj and rear cross beams 2 and 3. 'Ihe body rests on I-beam sills 4 that are disposed and suitably connected with the front and erring to the drawings,'A designates i rear axles 5 and 6, respectively, and on the axles are traction wheels 7. For conveniently moving the device .from place, a tongue 8 with suitable dra t means lisyapplied for bitching horses tothe machine.

lace to' The stump pulling mechanism comprises, in the present instance, two drumsB which are located in aXial alinement and fastened to a common shaft 10 which extends transversely of the body A and journaled in bearings 11 which are secured to brackets 12 fastened to side beains l of the body A, so that the drums are supported in an elevated position. Thedrums are spaced apart and the drum shafthas fastened thereto'a large ratchet wheel 13 which is spaced from the adjacent ends or heads of the drums. Hanging from t-he shaft is a lever 14 made in two sections which have their upper ends pivoted on the drum shaft so as to freely swing back and forth thereon as acenter, and between the lower ends of the sections of the lever is carried a pawl 15 fulcrumed at 16 and having lthe extremity 17 heavier than the nose of the pawl, so thatfsuch nose will be maintained in contact with the ratchet teeth of the wheel 13. This lever is ada ted to have a back 'and forth swing of a out sixty degrees, more or less, the forward swing causing the drums to turn in an anticlockwise direction, Fig. 2, for winding the cables, while the rearward swing is the idle stroke and brings the pawl into position to impart another partial turn to the drums on the next forward stroke. Coacting with the ratchet wheel is another awl 18. which is fulcrumed at 19 on a cross 1 eam 20 firmly secured to the vehicle body and having its ends strengthened by braces 21. ,This pawl 18 vis constantly in engagement with the ratchet teeth and maintains the draft on the cables during the return stroke of the operating lever. y The' turning of the drums through the ratchet and pawl mechanism is accomplished by a hydraulic motor or` jack C which is located centrally of and at the rear of the vehicle body A, the said motor comprising a cylinder 22 which is horizontally isposed and contains a pist-on .or plunger 23 that has its front end connected "by a hinge joint 24 with the rear end of a connecting rod 25, which rod has its forward end hingedly connected at 26` with the lower end of the pawl-carrying lever 14. -The cylinder of the motor is secured to and set vin between the rear cross beam 3 and another cross beam 26 which extends transversely of the vehicle body and is secured to the side beams thereof. The motive medium is supplied to the motor or jack through a pipe 27 which connects with the rear end of the cylinder so that the medium acting on the rear end of the piston or plunger 22 will force the same forwardly and cause the pawlcarrying lever to swing in the same direction and turn the drums. This pipe 27 connects with a pump device D secured by bolts 28 to the right side beam of the body A. This pump device D is substantially the same as the kind used in connection with hydraulic jacks and includes a pump 29 that draws its supply from a reservoir 30 and delivers the hydraulic medium through the pipe 27, there beingthe usual pressure gage 3l connected with the delivery side of the pump.

After the motor. piston has been 4moved tol medium is supplied to the motor. The lever 33 is of vconsiderable length so that great power can be exerted'by a single man. The return of the motor piston is accomplished by another lever 35, which, as shown in Fi l is fulcrumed at 36 to one side of the vehicle body and extends therefrom to the pump side, where the free or handle end 37 can be conveniently within reach of the operator while standing at the pump lever. This piston returning lever 35 extends under the connecting rod 25 and is suitably connected therewith, as for instance, by a pin 38 on the rod 25 extending into a slot 39 in the lever. The lever 35 is in the full lineposition, Fig. 1, at the beginning of the power stroke and when it reaches the dotted line position 40,`the operator stops operating the pump lever 33 and manipulates the valve controlling device 32, `and then moves the handle end of the lever 35 rearwardly to its full line position, thereby forcing the hydraulic medium out of the cylinder 22 `through the pipe 27 ruid back to the reservoir 30 where such medium can be used over again during the next stroke.

Two cables E and F are used in connection with the drums B. The forward cable E has its ends secured by pins 41 to the inner heads of the drums and are adapted to wind on the drums from the top. The rear cable F is fastened by pins 42 to the cuter heads of the drums and is adapted to wind around the latter from underneath. At the rear of the vehicle body A is a horizontal roller 43 that is disposed under the rear cable F so as to support the latter out of contact with the vehicle body and provide for the easy winding of the cable.

From the foregoing description, taken in connection with the accompanying drawing., the advantages of the construction and of the method of operation will be readily apparent to those skilled in the art to which the invention appertains, and while I have described the principle of operation of the invention, together. with the apparatus which I now consider tobe the best embodiment thereof, I desire to have it understood that the apparatus shown is merely illustrative, and that such changes may be made when desired as are within the scope of the claims appended hereto.

Having thus described the invention, what I claim as new, is.:-

1. The combination of a four-wheel truck, a hydraulic cylinder jack mounted thereon, mechanism mounted on said truck to be driven by said jack, a piston rod, a connecting rod pivotally attached to the iston rod and connecting said rod with sald mechanism, a pump for applying pressure to said jack to move the piston in one direction, and a horizontal piston return lever fulcrumed on said truck to move in na horizontal plane extending 'across and having a jointed connection with said connecting rod, said pump embodying a. hand lever operable at the same side of the truck as said piston return lever. o

2. The combination of a four-wheel truck,

a hydraulic cylinder and piston jack mounted on said truck, a' iston rod, a connecting rod jointed to the piston rod, mechanism on said truck driven by said connecting rod, a hand operated piston return lever ful crumed on one side of the truck extending transversely of the latter and projecting from the opposite side thereof, a jointed connection between said lever and rod whereby the piston is moved on its return stroke by said hand lever, and a pump mounted on said truck connected with the jack for supplying fluid under pressure thereto to e'ect the forward stroke of the piston, said pump having an operating lever isposed at the same side of the truck as the free end of the piston return lever.

In testimony whereof I aiix my signature in presence of two Witnesses.

CHARLES J. TRINKAUS. Witnesses: j

LEON L. KNAUB, FRANK CoNLEr. 

